BigT, I managed to take a peek at them. For you others, right click, select "Copy image location", then paste in a new tab. You'll see them, two shots of a gray Evo with purple rims.
OK here we go. You're using some wickedly wide angles to get rollers from the lane next to the car. Ideally, for a rolling shot, you either need a rig or some more distance between you and the car you're shooting. Also, you need something to stabilize your camera a little better, as there's some motion blur in the car itself. You have the basic idea, though.
Adamjay, the first shot's been pretty well covered. The second, it's only a little bit soft. I think the reason there is less your aperture, but the rotation of the whole car and shutter speed. When panning, Shutter Priority or Tv is your absolute best friend, combined with auto ISO. The intercooler, headlights, and passenger are all in focus and it's not a BAD shot by any means. It's just those little picky things.